Contrast the trend in number of workers between 1890 and 1900 with the trend for the same time period in worker's income.

The population was increasing but the wages stayed the same.

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.

it reintroduced the two-party system.